Granular storage bin



FIG. 1 is a front perspective view of a granular storage bin showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof; the opposite side being a mirror image;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a granular storage bin, as shown and described. 